AirHint found the following cheapest return flights from Singapore (SIN) to Istanbul (IST) in April 2026 (see full year).

Return flights

23 Apr - 26 Apr	AirAsia
13 Apr - 22 Apr	Gulf Air
01 Apr - 08 Apr	Gulf Air
15 Apr - 25 Apr	Gulf Air
22 Apr - 29 Apr	Gulf Air
05 Apr - 15 Apr	Gulf Air
10 Apr - 20 Apr	Gulf Air
20 Apr - 24 Apr	Gulf Air
17 Apr - 22 Apr	Gulf Air
21 Apr - 25 Apr	Gulf Air
30 Apr - 04 May	Gulf Air
23 Apr - 03 May	Gulf Air
25 Apr - 16 May	Gulf Air
30 Apr - 04 May	Turkish Airlines	direct
25 Apr - 16 May	Turkish Airlines	direct
23 Apr - 03 May	Turkish Airlines	direct
30 Apr - 07 May	China Southern

Also check the deals for one-way flights from Singapore to Istanbul in April.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Singapore to Istanbul in April from 416€

Return flights